;(function () {
  function transMore (bmap, points, type, callback) {
    var xyUrl =
      'http://api.map.baidu.com/ag/coord/convert?from=' + type + '&to=4&mode=1'
    var xs = []
    var ys = []
    var maxCnt = 20 //每次发送的最大个数
    var send = function () {
      var url =
        xyUrl +
        '&x=' +
        xs.join(',') +
        '&y=' +
        ys.join(',') +
        '&callback=callback'
      //动态创建script标签
      load_script(url)
      xs = []
      ys = []
    }
    for (var index in points) {
      if (index % maxCnt == 0 && index != 0) {
        send()
      }
      xs.push(points[index].lng)
      ys.push(points[index].lat)
      if (index == points.length - 1) {
        send()
      }
    }
  }
  // window.BMap = window.BMap || {};
  bmap.Convertor = {}
  bmpa.Convertor.transMore = transMore
})()
